Home Business Wall Street gains on U.S.-China trade optimism; Trump declares emergency Business Wall Street gains on U.S.-China trade optimism; Trump declares emergency By Genpie - February 15, 2019 222 0 Facebook Twitter Google+ Pinterest WhatsApp Wall Street’s main indexes were set on Friday to post their biggest weekly gain in nearly a month, as investors were optimistic about the ongoing trade talks to resolve a bruising tariff dispute between the United States and China.